Clothes-hanger shaped spinning die head runner structure for uniform melt distribution

A spinning die, uniform distribution technology, applied in melt spinning, spinneret assemblies, textiles and papermaking, etc., can solve the problems of loss, uniform distribution, large die height, etc., and achieve processing and installation positioning accuracy The effect of reducing requirements, improving work efficiency, and saving manufacturing costs

Pending Publication Date: 2020-01-03
北京钧毅微纳新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the structure of the spinning pump distribution and pipeline distribution, the distribution is intermittent in the width direction, and the distribution at any position in the width direction cannot be achieved evenly, and the height of the die head is often relatively large, especially for the pipeline distribution type. will cause a relatively large pressure loss

Method used

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  • Clothes-hanger shaped spinning die head runner structure for uniform melt distribution
  • Clothes-hanger shaped spinning die head runner structure for uniform melt distribution
  • Clothes-hanger shaped spinning die head runner structure for uniform melt distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] Such as figure 1 with 2 As shown, a clothes hanger-shaped spinning die runner structure for evenly distributing the melt,

[0134] The die flow channel structure includes a manifold 1 and a slit channel 2; the manifold 1 is arranged on the upper part of the slit channel 2;

[0135]Wherein, the manifold 1 is in the shape of a clothes hanger; the manifold 1 is a horizontal U-shaped structure, and the horizontal U-shaped structure includes a bottom end 1-1, a first side wall 1-2 of the manifold, a second manifold Two side walls 1-3 and the third side wall 1-4 of the manifold, the bottom end 1-1 of the horizontal U-shaped structure is a semicircular structure with a radius r, and the first side wall 1-2 of the manifold One end is connected tangentially to one side of the bottom end 1-1 of the horizontal U-shaped structure, and the other end of the first side wall 1-2 of the manifold is vertically connected to the third side wall 1-4 of the manifold , one end of the secon...

Embodiment 2

[0153] Such as figure 1 with figure 2 As shown, the present embodiment provides a clothes-hanger-shaped spinning die, which includes the runner structure of the clothes-hanger-shaped spinning die in Embodiment 1; the clothes-hanger-shaped spinning die also includes a feed pipe, and the feed The pipe communicates with the feed port on the third side wall 1-4 of the manifold of the horizontal U-shaped structure; the feed pipe is used to connect external equipment and transport the melt into the manifold 1; the hanger-shaped The spinning die head also includes a balance cavity 5 which communicates with the outlet 4 of the slit channel.

[0154] In a preferred embodiment of the present invention, the shape of the balance chamber 5 is not particularly limited, it can be a cavity with a specific volume, the upper end of the balance chamber communicates with the outlet of the slit flow channel, and the balance chamber The lower end can communicate with other spinning components; t...

Embodiment 3

[0158] A meltblown device, such as image 3 As shown, the melt-blown device includes the hanger-shaped spinning die described in Embodiment 2, and the melt-blown device also includes a spinning assembly, an air knife 15 and a device 11 for evenly distributing fluid; the spinning The assembly includes a distribution plate 12 and a spinneret 14; the spinneret 14 forms a spinneret hole 17 for melt ejection; the spinneret 14, the distribution plate 12 and an air knife 15 form a draft hot air flow channel 13 , for the circulation of the hot air flow; the air knife 15 and the spinneret 14 form an air gap slit 16 for accelerating the hot air flow and ejecting it;

[0159] The balance cavity 5 at the bottom of the hanger-shaped spinning die communicates with the spinneret hole 17 formed by the spinneret 14 in the spinning assembly, and the outlet end of the device 11 for evenly distributing the fluid is connected to the distribution plate in the spinning assembly 12. One end of the d...

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Abstract

The invention provides a clothes-hanger shaped spinning die head runner structure for uniform melt distribution and a clothes-hanger shaped spinning die head with the die head runner structure. The structure is characterized in that firstly, the flow rate of high polymer melt in the breadth direction of a slit runner outlet is equal everywhere; secondly, the pressure drop of the high polymer meltflowing from a feeding port to the slit runner outlet is equal everywhere in the breadth direction; thirdly, the staying time of the high polymer melt in the whole spinning die head runner structure is short and equal everywhere at the slit runner outlet along the in the breadth direction. The equalities in three aspects have unique advantages in production of high polymers with poor thermal stability or with dependency of the rheological property on time. By adoption of the clothes-hanger shaped spinning die head runner structure, stable and uniform products can be prepared, such as ultrafinenanofibers and related products thereof. A wide application range is realized, and a great spinning performance aiming at high polymers which can be hardly processed and utilized by conventional spinning equipment is achieved.

Description

technical field [0001] The invention belongs to the technical field of nonwoven fabric manufacturing technology, and in particular relates to a hanger-shaped spinning die head runner structure for evenly distributing melt. Background technique [0002] In the process of spunbond and meltblown nonwovens, the importance of the spinning die cannot be overemphasized. It is a basic and source component of the nonwovens process, and the fineness and uniformity of the fiber , the uniformity, strength and other technical indicators of nonwovens are inevitably affected by it, and the increase in spinning speed is also strongly restricted by it. More importantly, it determines the stability of spinning conditions, right and wrong A prerequisite for the success of the weaving process. [0003] Melt-blown (spunbond) non-woven distribution channels are different from film or plastic distribution channels. The main reason is that there are adjustment devices such as damping rods in the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D4/00D01D4/06D01D5/098D04H1/56
CPCD01D5/0985D01D4/06D01D4/00D04H1/56
Inventor 王钧效刘玉军侯慕毅李化毅
Owner 北京钧毅微纳新材科技有限公司
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